Trip device



B. C. RIBLET April 7 1931.

TRIP DEVICE Filed June 17, 1929 T 0 l R e v n I BYRON C. P/BLkT By ffi/M 5 Attorney Patented Apr. 7, 1931 mvnon o. 313L111}; or sroxnnniwesmneron;

131 3. nEviGE I 'Applieation filed .Tune'17,

Myxpresent invention relates to improved trip device for conveyer buckets and especially applicable for use in connection with v dump buckets travelling over overheadrails '01 tracks as in mining operationsyexcavating difi'erent kinds' of material that are conveyed ii -buckets, and for other purposes.

The trip device is adapted for use with suspended trolley-carriedbuckets that are overbalanced andwhich overturn by gravity for the purpose of dumping their contents, and the tripdevice includes a normally engaged trip lever'carried by'the'bucket which lever is released by c'o-aetion with a cam device' in 4: the path of the lever and located at the dump for automatically reversing or overturning the bucket. Means are provided at the load ing end of the overhead trolley track for righting-the bucket or automatically returning it to upright loading position and for fastening the trip lever in position to retain the loaded bucket in upright position during the course of its travel'to the dump.

By the utilization of the trip device of my invention the conveyer bucket is automatically released so that it may be turned over and emptied with facility, and the empty'bucket is again automatically righted to loaded position and locked in that position to receive a load of material.

The invention consists in certain novel combinations and arrangements of parts as will hereinafter be more fully pointed out and claimed. In the accompanying drawings I have illustrated one complete example of the physical embodiment of my invention wherein the parts are combined and arranged-according to the best mode I have thus far devised for the practical application of the 40 principles of my invention.

Figure 1 is a perspective view showing a bucket suspended from an overhead trolley and track, equipped with the trip device of 7 my invention, and in position to swing or turn to reverse or dumplng posltion.

Figure 2 is a perspectlve vlew showing the bucket after it has overturned to dumping position.

Figure'3 is a perspective view of one of a pair of swiveled suspending yokes journaled the two straps. g I

The'bucket is' designated 15, and at itsends F it'is provided with brackets 16 in Figure land 1929. se ial eijresa' i in the trolley frame for supporting the bucket:

Figure l: is a perspective-view of one of I a pair of right and left hand brackets attachjed at the ends of, the bucket for co-action with the suspending yokes. i

f F'gure '5 is a perspect' 1 pair of levers located at opposite ends oflthe bucket.

In order that the general arrangement and 1' relation or parts may readily be understood I have illustrated in Figure 1a single'trolley track or rail '1 of an overhead tramway or railway over which theconveyer passes,said 7 conveyer comprising .a trolley frame made up ofupright-beams 2, 2, and a pair of two. Wheel trolley-trucks 3, 3. At the lowerends of thesetwo beamslare fashioned bearing bosses 4, 4, disposed transversely of the di-f' rection oftravel of the trolley,and designed to receivesuspending bolts 5 t-hat' are pro-ivided with journal ends 6 fitted into the bear ing bosses. Upon these bolts 5 are swiveled suspending yokes 7 one at each end of the lOsurrounds the sleeve and this boss is fash-' ioned with a lateral lug 10 that is perforated at 11.

levers are each fashioned with a locking-block: 14'. As shown-in Figurefi' the leversare fash- These perforated lugs are designed V for the support of a pair of trip levers l2," each having a pivot bolt 18 passed through a perforated'lug 10 for its support and the; '7 90x:

ioned of two metal'plates orstraps that diverge at their pivoted ends, and the locking block 14a riveted within the space between 16 in Figure 4, said brackets bring right and left hand devices for use at the opposite ends of thebuckets to which they are riveted-or bolted. Each bracket has a trunnion 17 journaled in a yoke 7, and at their upper ends the brackets have hooks 18 disposed in horizontal positions for straddling the sleeves 8 below thev bosses 10, and with their openings both toward the right in Figure 1 so that the bucket when released may overturn, by swing ing under action'ofj gravity, inan anti-clockwise direction. The hooks 18 have retaining lugs or looking lugs 19 for co-action with the lugs 14 of the trip levers tohold the bucket in upright position. The levers as shown extending transversely from the pivoted center of the bucket and the free ends of the levers mately horizontalwith the face of the lever lug 14 engaging the vertical face of the lug 19, thereby holding 'thebucket against rotamtion. When the free ends of the levers are lifted (as in Fig. 3),- to free lug 14i fromlug 19,Ithe bucket may overturn by gravity.

Thelevers are tripped and the bucket is released by ooact'ion with the levers of atrip loam 20 supported from stationary frame 21 in the'pathof traveLof the free ends of the levers: Assuming'that the bucket is travelingaway. from the observer in Figurel, the front-lever 12 has ridden up the cam 20 and isresting on ahorizontal portion 201 of the cam, and the rear lever has just passed over the cam, therefore both levers have been tripped, thebucket is released, and is about to swing on its trunnions to position of Figure 2 leaving the levers in their unlocked'positions. 7

On the ends of the-bucket, at the bottom, a trip arm 22is riveted, and this trip arm coactswith a cam 23 at the-loading end of the 7 4i conveyerjline'forrighting the-bucket to loading position, and in such-position the two trip levers 12, .12: fall into engagement wlth the cam 19 of the bracket for locking the bucket with the hooks 18 encircling the'sleeves 8. *The bucket'is then ready foranother load to be conveyed to the dump, at which place the trip device automatically operates to again release the loaded bucket so that it may empty- *disposed transversely of-the trunnions 17,.

' and pass partly around the sleeves 8 and across their sides that are remote from the bucket. By this arrangement of the hooks the I yokes'and sleevesare held in alinement with M the beams, which are parallel, and the yokes and sleeves are held parallel with the opposite endsof the bucket, regardless' of'whether the trolley and bucket are traveling upgrade or downgrade.

The' hooks 18 also" hold the-yokes-against project beyond the edge'ofthe bucket, and' having trunnions and retaining hooks rigid in locked positionthe levers; are approXi-- Letters Patent is a 1. The combination with a tiltable bucket therewith, of a carrier frame having. suspending. boltspivotedin the frame for co-action with the hooks, yokes swiveled on the bolts for supporting. said trunnions, a. trip lever pivotally supported on one of said bolts, and co-act-ing meanson thetr-ip lever and avhook i for retainingthe bucketin upright position.

2. The combination with atiltable bucket havinga bracket, a trunnion onthe bracket, a hook at the upper end ofthebracket anda g locking lug on said-hook,of a trolley frame having a'bearing boss, a bolt having a ournal in saidbossand a=yoke'swiveled, onthe bolt for suspending: the trunnion and for engagement with the hook, atrip lever pivoted on 5 the yoke and a locking lug on said lever for co-action with the locking. lug on the hook.

In testimonywhereof I affix. my signature.

BYRON G.- RIBLET. 

